Publication details

Dual carbonate sensor based on Eu(III) complex of DO3A ligand

Authors

VANĚK Jakub SMRČKA Filip LUBAL Přemysl TŘÍSKOVÁ Iveta TRNKOVÁ Libuše

Year of publication 2016
Type Article in Periodical
Magazine / Source Monatshefte für Chemie - Chemical Monthly
MU Faculty or unit

Faculty of Science

Citation
Web http://dx.doi.org/10.1007/s00706-016-1722-x
Doi http://dx.doi.org/10.1007/s00706-016-1722-x
Field Analytic chemistry
Keywords luminiscence probe; electrochemical probe; carbonate; Eu(III) complexes; macrocyclic ligands
Description Eu(III) ternary complexes with 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (H(3)DO3A) and picolinate-like "antenna" ligands ([Eu(DO3A)(L)](-)) react with carbonate anion to form more stable [Eu(DO3A)(CO3)](2-) complexes which are non-fluorescent. Furthermore, [Eu(DO3A)(L)](-) and [Eu(DO3A)(CO3)](2-) differ in their electrochemical behavior. [Eu(DO3A)(L)](-) are therefore suggested as sensitive luminescence-based and also electrochemical sensors of carbonate anion. Both luminescence and voltammetric sensing strategies show similar analytical figures of merit (limit of detection 0.2 mM, dynamic range 0.2-1.6 mM). The voltammetric procedure was successfully tested in field conditions for the quantitative analysis of bicarbonate/carbonate in environmental water samples, utilizing portable potentiostat and screen-printed electrode.
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